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新型聚 (N-甲基-L-氨酸) 接种基托桑微球基于固相提取与ICP-MS相结合,用于同时检测食品中的微量金属元素

Yichuan Cao¹, Jiaxing Qin¹, Zheng Su¹

¹State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China.

Food chemistry: X

|December 25, 2023

概括

新型聚 (N-甲基-L-氨酸) 接种的葡萄酸-交联基托桑微球 (PNMA-TACS) 有效吸附金属离子. 这种方法可以对食品系统中的微量金属进行敏感的检测.

科学领域:

材料科学材料科学材料科学
分析化学分析化学
环境科学环境科学

背景情况:

基于酸盐的材料因其生物相容性和丰富性而被广泛用于金属离子吸附.
开发高效的吸附剂对于在食品等复杂矩阵中进行微量金属分析至关重要.

研究的目的:

为了合成和表征Poly (N-甲基-L-氨酸) 接种的葡萄糖酸-交叉链接的基托桑微球 (PNMA-TACS).
开发一种使用PNMA-TACS的固体相提取 (SPE) 方法,用于分离和丰富食品样本中的微量金属离子.
将SPE方法与感应合等离子体质谱法 (ICP-MS) 结合起来,以准确量化目标金属离子.

主要方法:

通过移植和交叉连接合成PNMA-TACS微球.
使用相关分析技术,对合成的微球进行表征.
优化SPE参数,包括pH值,样品体积和化条件.
使用ICP-MS.II) 来量化微金属离子 (V,V,Cr,III,As,III,Pb,II,Cd,II,Cu) 的含量.

主要成果:

成功合成和表征PNMA-TACS微球.
优化的SPE方法证明了目标金属离子的优异线性.
对分析的金属离子实现了低检测极限 (1.1-3.7 ng L-1).
在真实食品样本 (大米和奶粉) 中获得的高回收率 (86.1-103.5%).

结论:

PNMA-TACS微球是微金属离子分离和丰富的有效吸附剂.
开发的SPE-ICP-MS方法为食品中金属离子的确定提供了高灵敏度和精度.
这种方法为食品安全监测和质量控制提供了可靠的工具.

关键词:

在ICP-MS中,使用的是ICP-MS.金属离子是金属离子.在N-甲基烯基-L-氨酸酸.固相提取固相提取的方法酸与酸交联的奇托桑微球.

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